BCM4705
®
Brief
SUMMARY OF BENEFITS
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Turnkey hardware and software platform
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Extremely rapid development of draft 802.11n Wi-Fi
®
Access
Point/Routers.
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Full Linux router stack and software package
platform support
Intensi-fi™ Gigabit Ethernet Draft-802.11n Processor
FEATURES
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Advanced 500 DMIPS/300-MHz MIPS32
®
core
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4-way set associative 32-KB I-Cache
2-way set associative 32-KB D-Cache
4-KB Read-Ahead Cache
MMU/TLB support for Linux
®
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Flexible single-band, dual-band, and simultaneous dual-band
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MIMO configurations supported
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2x2, 2.4 GHz
2x2, 2.4/5.0 GHz
3x3, 2.4 GHz
3x3, 2.4/5.0 GHz
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Advanced Gigabit Ethernet MAC
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Hardware TCP segmentation and Checksum offload
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GMII, RGMII, and MII PHY connectivity
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Two USB2.0 High-speed host ports
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One USB2.0 High-speed device port
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DDR SDRAM controller
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16/32-bit DDR266 and 133-MHz SDRAM support
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8 MB to 512 MB capacity
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Support for 8/16/32-bit wide memory devices
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Maximum performance and high throughput
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Gigabit Ethernet LAN speeds
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Over 190 Mbps TCP/IP Gigabit Ethernet to Wi-Fi bridging in
single-band configuration
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Over 250 Mbps TCP/IP Gigabit Ethernet to Wi-Fi bridging in
simultaneous dual-band configuration
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PCI 2.3 Host interface (32 bit/33–37 MHz)
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Supports four PCI bus masters
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Optional 5V-tolerant operation (PCI 2.2 support)
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Flexible architecture for low cost and alternative designs
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Allows connection to external 10/100 switches for ultra low
cost applications
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Platform expansion through USB2.0
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Platform expansion through PCI/Cardbus
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Advanced GPIO interface
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All GPI supports interrupt triggering capability
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Dual RS232 UART
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2.4W Low-power design
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Networked Attached Storage (NAS)
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Easily build NAS routers with included NAS software module
BCM4705 System Diagram
BOARDCOM [ Broadcom Corporation. ]
